Authorization Server Vulnerability in Keycloak Impacts User Permissions
CVE-2026-114232

8.1HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Red Hat Single Sign-on 7
Vendor
CVE Published:
5 November 2026

What is CVE-2026-114232?

A vulnerability exists in the UserManagedPermissionService of Keycloak's authorization server, where the UMA Protection API inadequately validates the resourceType field when policies are created. This oversight allows a malicious user to generate a policy that improperly applies to resources owned by different users, resulting in potential unauthorized access or modification of sensitive data. This flaw underscores the importance of robust permission validation mechanisms in access control systems to safeguard user data.

References

https://access.redhat.com/security/cve/CVE-2026-114232
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2558074
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank 0xNayel (YesWeHack Bug Bounty Program) for reporting this issue.
.